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The Dimensionality of Spacetime | Blackboard Chalk
https://blackboardchalk.wordpress.com/2007/09/02/the-dimensionality-of-spacetime
The Shape of a Moebius Strip. The Dimensionality of Spacetime. I was pointed to this old-ish paper. Tegmark begins by pointing out a few consequences of physical laws that seem to favour observers arising in a world with 3 1 dimensions:. 1 Under present physical laws, if we have more than one time dimension, elementary particles become very unstable. Still, they would be stable enough at very low kinetic energies, so perhaps we could have observers in such a world, just very slow ones. If this type of we...
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Blackboard Chalk | Reading and discussing scientific papers | Page 2
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Newer posts ». Is a cute paper investigating the geometry of turtle shells and its relationship with turtles’ strategies for flipping themselves over if they end up on their backs. The flattest types of shells are in class S. With two stable equilibria: upside-down and right-side-up. Then there are the intermediate shells with three stable equilibria (black dots are stable equilibria; white dots are unstable saddle points):. Category; most flat turtles into S. Tall) turtles can’t reach the ground w...
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The Relationship Between Arithmetic and Spatial Intuition | Blackboard Chalk
https://blackboardchalk.wordpress.com/2008/06/15/the-relationship-between-arithmetic-and-spatial-intuition
As if free will wasn’t in enough trouble. Blocking streets to reduce congestion delays. The Relationship Between Arithmetic and Spatial Intuition. Label one end of a straight line 0, and the other end 100. Ask a person to place the number 10 at some point along the line. Where would the person choose to place the number 10? A possible explanation for this log relationship is the ‘compressed numerosity code’ the brain uses for mental arithmetic:. Feed for this Entry. Leave a Reply Cancel reply.
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2008 - Mis-Adventures of a Curious Character
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2008 - Mis-Adventures of a Curious Character.
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Will Power | Blackboard Chalk
https://blackboardchalk.wordpress.com/2008/02/13/will-power
A Little Biological-Anthropological Speculation. Phenotypic Switching Rates and Environmental Fluctuations. Now you have an excuse for why you can’t seem to stay on a diet. If this paper. Is right, the drop in blood glucose levels caused by dieting erodes your self-control and increases the likelihood, as your diet progresses, that you fail to follow it. The authors designed nine different experiments to test each of the following hypotheses:. Amount of glucose. So it’s not true that “it&...Gailliot, M&#...
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Blocking streets to reduce congestion delays | Blackboard Chalk
https://blackboardchalk.wordpress.com/2008/10/03/blocking-streets-to-reduce-congestion-delays
The Relationship Between Arithmetic and Spatial Intuition. The ubiquity of corn in US fast food. Blocking streets to reduce congestion delays. Intuitively, it seems that a larger number of alternative routes in a traffic network would reduce traffic congestion. This PRL paper. Though, suggests that the removal of some roads would actually reduce congestion. This comes about because the presence of these roads can create a game-theoretic situation in which the Nash equilibrium. At the end, the authors sug...
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Pathogens and Polygyny | Blackboard Chalk
https://blackboardchalk.wordpress.com/2008/01/31/pathogens-and-polygyny
A Little Biological-Anthropological Speculation. At first sight it might seem that pathogens have little to do with polygyny. But anyone who knows the ‘Red Queen’ theory can probably guess the link between the two. In brief, the Red Queen. Paper investigating a possible link between pathogen stress and polygyny says, “The greater the pathogen stress, the greater is the advantage to the production of variable offspring.”. And Marlene Zuk proposed. Signals). Biologically, humans have little sexual dimo...
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The ubiquity of corn in US fast food | Blackboard Chalk
https://blackboardchalk.wordpress.com/2009/01/09/the-ubiquity-of-corn-in-us-fast-food
Blocking streets to reduce congestion delays. The right way to interpret MPG. The ubiquity of corn in US fast food. The authors of this study. Analysed a cross-region and cross-restaurant chain sample of fast food for specific carbon and nitrogen isotopes. The carbon isotope in question,. C consistent with a completely corn-based diet. Their analysis of levels of. Why should you care? In their guts that would occur otherwise. More antibiotic-resistant bacteria strains is not good news for anyone. You are...
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Phenotypic Switching Rates and Environmental Fluctuations | Blackboard Chalk
https://blackboardchalk.wordpress.com/2008/03/31/phenotypic-switching-rates-and-environmental-fluctuations
As if free will wasn’t in enough trouble. Phenotypic Switching Rates and Environmental Fluctuations. In figures (a) and (b), the model predictions are represented by the solid lines, while the experimental findings make up the data points. The authors interpret their findings as an example of risk management by yeast populations:. Acar, M., J. T. Mettetal, and A. van Oudenaarden (2008, April). Stochastic switching as a survival strategy in fluctuating environments. 40 (4), 471-475. Feed for this Entry.
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